.spinner {
  height: 100px;
  width: 100px;
  margin: 100px auto;
  text-align: center;
  font-size: 10px;
}
.spinner > div {
  display: inline-block;
  width: 10px;
  height: 100%;
  background-color: #2b80e2;
  margin-right: 1px;
  animation: bytedance 1s infinite;
}
.spinner > div:nth-child(2) {
  animation-delay: -0.9s;
}
.spinner > div:nth-child(3) {
  animation-delay: -0.8s;
}
.spinner > div:nth-child(4) {
  animation-delay: -0.7s;
}
.spinner > div:nth-child(5) {
  animation-delay: -0.6s;
}
@-moz-keyframes bytedance {
  0%, 40%, 100% {
    transform: scaleY(0.4);
  }
  20% {
    transform: scaleY(1);
  }
}
@-webkit-keyframes bytedance {
  0%, 40%, 100% {
    transform: scaleY(0.4);
  }
  20% {
    transform: scaleY(1);
  }
}
@-o-keyframes bytedance {
  0%, 40%, 100% {
    transform: scaleY(0.4);
  }
  20% {
    transform: scaleY(1);
  }
}
@keyframes bytedance {
  0%, 40%, 100% {
    transform: scaleY(0.4);
  }
  20% {
    transform: scaleY(1);
  }
}
